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Purification method of graphene oxide and graphene oxide

A purification method and graphene technology, applied in chemical instruments and methods, ion exchange column/bed methods, inorganic chemistry, etc., can solve the problems of poor purification effect and high content of impurity ions

Active Publication Date: 2018-06-08
湖北高地石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the purification effect is not good, and the content of heteroions is still high

Method used

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  • Purification method of graphene oxide and graphene oxide
  • Purification method of graphene oxide and graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] ion exchange purification

[0098] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.2%;

[0099] B2, the hydrogen type strong acid cation resin and the hydroxide type strong base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0100] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 200L / h.

Embodiment 2

[0102] ion exchange purification

[0103] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.5%;

[0104] B2, the hydrogen type weak acid cation resin and the hydroxide type weak base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0105] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 50L / h.

Embodiment 3

[0107] ion exchange purification

[0108] B1, configuring the graphene oxide to be purified into a graphene oxide solution with a solid content of 0.3%;

[0109] B2, the hydrogen type weak acid cation resin and the hydroxide type weak base anion exchange resin are loaded into the ion exchange column, the cation exchange resin is set in the upper section, and the anion exchange resin is set in the lower section;

[0110] B3, sending the graphene oxide solution into the ion exchange column; the flow rate of the graphene oxide solution is 120L / h.

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Abstract

The invention discloses a method for purifying graphene oxide and graphene oxide. The graphene oxide purification method comprises the following steps: ion exchange purification: passing the graphene oxide solution through a cation exchange resin and an anion exchange resin in sequence; the cation exchange resin is a hydrogen type cation exchange resin, and the anion exchange resin is a hydroxide type anion exchange resin. The purification method provided by the present invention has the advantages of simple operation and high purification efficiency. In the purified graphene oxide, the content of each metal impurity is less than 10ppm; in addition, the used ion exchange resin can be reused through regeneration, which is energy-saving and environmentally friendly. .

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a method for purifying graphene oxide and graphene oxide. Background technique [0002] Graphene oxide is the product of chemical oxidation of graphite powder, and it is a new type of carbon material with excellent performance. Graphene oxide is an important intermediate for the chemical preparation of graphene. In addition, graphene oxide has a high specific surface area and abundant functional groups on the surface, which can be used to compound with other materials to prepare composite materials. [0003] Graphene oxide will inevitably introduce a large number of impurity ions during the preparation process, such as heavy metal ions such as manganese ions, iron ions, and nickel ions, as well as sodium ions and potassium ions. The content of impurities in graphene oxide has an important impact on its own performance and its follow-up products (such as graphene, graphene oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/198
CPCB01J47/04B01J39/05B01J49/53B01J49/57B01J49/60C01B32/196B01J39/07B01J41/07B01J41/05B01J20/205C01B32/198
Inventor 张麟德
Owner 湖北高地石墨烯科技有限公司
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